References of "Scientific journals"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailExecutive functions in birds
Bobrowicz, Katarzyna UL; Greiff, Samuel UL

in Birds (2022)

Executive functions comprise of top-down cognitive processes that exert control over information processing, from acquiring information to issuing a behavioral response. These cogni- tive processes of ... [more ▼]

Executive functions comprise of top-down cognitive processes that exert control over information processing, from acquiring information to issuing a behavioral response. These cogni- tive processes of inhibition, working memory, and cognitive flexibility underpin complex cognitive skills, such as episodic memory and planning, which have been repeatedly investigated in several bird species in recent decades. Until recently, avian executive functions were studied in relatively few bird species but have gained traction in comparative cognitive research following MacLean and colleagues’ large-scale study from 2014. Therefore, in this review paper, the relevant previous findings are collected and organized to facilitate further investigations of these core cognitive processes in birds. This review can assist in integrating findings from avian and mammalian cognitive research and further the current understanding of executive functions’ significance and evolution. [less ▲]

Detailed reference viewed: 62 (2 UL)
Full Text
Peer Reviewed
See detailStudent profiles of self-concept and interest in four domains: A latent transition analysis
Franzen, Patrick UL; Arens, A. Katrin; Greiff, Samuel UL et al

in Learning and Individual Differences (2022), 95(5), 102-139

Dimensional comparisons lead to contrast effects between academic self-concepts, implying that students view themselves as a math-type or a verbal-type. This study examined the short-term stability of ... [more ▼]

Dimensional comparisons lead to contrast effects between academic self-concepts, implying that students view themselves as a math-type or a verbal-type. This study examined the short-term stability of these types and their generalizability to academic interest. N = 382 students completed questionnaires on self-concept and interest in math, physics, German, and English at two measurement waves over five weeks. Latent transition analyses were conducted with self-concepts and interests as indicators, revealing four profiles for both constructs. For self-concept a math + high profile, verbal + high profile, verbal + low profile and generally-moderate profile were found. For interest a math profile, verbal profile, generally-high profile, and generally-low profile were found. These profiles indicated that the formation of domain-specific self-concept and interest differs between groups of students. The profiles were stable across measurement waves. Relations to school grades and gender matched theoretical assumptions. [less ▲]

Detailed reference viewed: 82 (14 UL)
Full Text
Peer Reviewed
See detailRobust approaches for model-free small-angle scattering data analysis
Bender, Philipp; Honecker, Dirk; Bersweiler, Mathias UL et al

in Journal of Applied Crystallography (2022), 55

Detailed reference viewed: 34 (0 UL)
Full Text
See detailDigitale Gesundheitsanwendungen in der Neurologie
van Schagen, Sijmen UL

in Der Neurologe und Psychiater (2022)

Digital health applications - apps on prescription - are promising and have also arrived in neurology. A fundamentally new approval process has been created for this, defining categories of positive care ... [more ▼]

Digital health applications - apps on prescription - are promising and have also arrived in neurology. A fundamentally new approval process has been created for this, defining categories of positive care effects to be demonstrated. All stakeholders involved are called upon to shape the process so that patients receive the full potential of digital medicine. [less ▲]

Detailed reference viewed: 35 (2 UL)
Full Text
Peer Reviewed
See detailOpinion Statement ECJ-TF 1/2022 on the ECJ Decision of 25 November 2021 in État Luxembourgeois v. L (Case C-437/19) on the Conditions for Information Requests and Taxpayer Remedies
Kofler, Georg; García Prats, Alfredo; Haslehner, Werner UL et al

in European Taxation (2022), 62(4), 219-223

In the judgment commented on in this article, the Court of Justice clarified the conditions for the identification of a taxpayer in group requests under the DAC (Directive 2011/16) and confirmed that ... [more ▼]

In the judgment commented on in this article, the Court of Justice clarified the conditions for the identification of a taxpayer in group requests under the DAC (Directive 2011/16) and confirmed that article 47 of the Charter on Fundamental Rights requires the information holder to be given the necessary information to assess the request’s legality. [less ▲]

Detailed reference viewed: 17 (0 UL)
Full Text
Peer Reviewed
See detailIs Risk-Neutral Skewness an Indicator of Downside Risk? Evidence from Tail Risk-Taking of Hedge Funds
Lehnert, Thorsten UL

in Journal of Derivatives (2022), 29(3), 30-45

Detailed reference viewed: 113 (4 UL)
Full Text
Peer Reviewed
See detailLocational Choice and Secondary Movements from the Perspective of Forced Migrants: A Comparison of the Destinations Luxembourg and Germany
Glorius, Birgit; Nienaber, Birte UL

in Comparative Population Studies (2022), 47

In 2015 and 2016, the enormous increase in asylum seekers travelling along the Balkan Route confronted the Member States of the European Union with an exceptional pressure on national asylum systems ... [more ▼]

In 2015 and 2016, the enormous increase in asylum seekers travelling along the Balkan Route confronted the Member States of the European Union with an exceptional pressure on national asylum systems. Since then academic literature has revealed a reappraisal of the Common European Asylum System at regulative and policy implementation level, notably regarding the fair distribution of asylum seekers across Member States and regions. Yet we know very little about the locational choices of forced migrants or how those choices evolved and transformed during their journey. In this paper, we aim to shed light on those decision-making processes and (individual, subjective) locational choices based on the aspiration-ability model, drawing from a series of qualitative interviews with migrants held in Luxembourg and Germany in the context of the H2020 project CEASEVAL. We focus on the migrants’ journeys to their actual recipient countries, highlighting mobility trajectories from the moment of fi rst departure and on the process of decision-making regarding their choice of location. Then, we examine further mobility aspirations, which may lead to secondary mobility within or out of the country of residence. In the concluding section, we discuss the consequences of our fi ndings for migration and asylum politics against the background of the “autonomy of migration” framework. [less ▲]

Detailed reference viewed: 54 (2 UL)
Full Text
Peer Reviewed
See detailRecent Developments and Overview of the Country and Practitioner’s Reports
Cole, Mark David UL

in European Data Protection Law Review (2022), 8(1), 73-77

Detailed reference viewed: 15 (0 UL)
Full Text
Peer Reviewed
See detailThe Use of Artificial Intelligence in the Judiciary and Its Compliance with the Right to a Fair Trial
Terzidou, Kalliopi UL

in Journal of Judicial Administration (2022), 31(3), 154-168

European courts are increasingly investing in Artificial Intelligence (AI) applications for the automation of the administration of justice, to improve the efficiency and quality of the judiciary. However ... [more ▼]

European courts are increasingly investing in Artificial Intelligence (AI) applications for the automation of the administration of justice, to improve the efficiency and quality of the judiciary. However, AI can display considerable issues, such as opaqueness and unfair bias, resulting from the defective designing of their algorithms. This article explores the opportunities and risks of AI technology for court users – including judicial staff, legal representatives and litigants – by investigating proposed and developed applications by European judiciaries under the right to a fair trial. AI is found to pose certain risks to the independence and impartiality of the judiciary, as well as to the adversarial and public character of court proceedings, notwithstanding the opportunities for the improvement of access to courts. The regulatory solutions for the safe use of AI adopted by European judiciaries can encourage similar practices in other judiciaries, including Australia and the United States. [less ▲]

Detailed reference viewed: 79 (6 UL)
Full Text
See detailUmstellung eines Campingplatzes auf solare Energieversorgung
Latz, Sebastian UL; Maas, Stefan UL

in Konferenzbeiträge Bauphysiktage Kaiserslautern 2022 (2022), 5

Der fortschreitende Klimawandel verlangt ein Umschwenken, weg von der fossilen Energieversorgung und hin zu den Erneuerbaren, wobei nachhaltige Tourismusangebote auch verstärkt einbezogen werden müssen ... [more ▼]

Der fortschreitende Klimawandel verlangt ein Umschwenken, weg von der fossilen Energieversorgung und hin zu den Erneuerbaren, wobei nachhaltige Tourismusangebote auch verstärkt einbezogen werden müssen. Der Campingplatz Treviris liegt auf dem Gelände des Rudervereins Treviris Trier und verzeichnet jährlich von Mitte April bis Mitte Oktober zwischen 40 und 50.000 Übernachtungen. Im Zuge des Neubaus des Bootshauses wird der vorhandene Gasanschluss zurückgebaut und die gesamte Wärme- und Stromversorgung der Liegenschaft muss auf regenerative Energien umgestellt werden. So soll der Bedarf des Campingplatzes, des Bootshauses (KfW 40 EE), der angegliederten Wohnbebauung mit zehn Wohneinheiten (KfW 40+) sowie mehrere Ladestationen emissionsneutral durch Sonnenenergie versorgt werden. Hauptbestandteile des Konzeptes sind eine 105 kWpeak PV Anlage mit 90 kWh Batteriespeicher sowie zwei Wärmepumpen, die um eine 80 m² hybride solarthermische Photovoltaikanlage (PVT) auf dem Campingplatz ergänzt werden soll. Insbesondere die Warmwasserversorgung des Campingplatzes ist hierbei eine Herausforderung, da die auftretenden Leistungsspitzen von 4m3 Warmwasser (WW) in 2 h nicht ausschließlich mittels Wärmepumpe bereitgestellt werden können. Es wird auf Wärmespeicher mit zentraler Frischwasserstation zurückgegriffen. Für die Dimensionierung der Hauptkomponenten: PVT Feld, Wärmepumpe und Pufferspeicher wird eine Zeitreihenanalyse mit variierendem Bedarf und schwankendem Solarangebot durchgeführt. [less ▲]

Detailed reference viewed: 43 (0 UL)
Full Text
Peer Reviewed
See detailVaria
Schafer, Valerie UL; Henriot, Carine

in Flux: Cahiers Scientifiques Internationaux Réseaux et Territoires (2022), 127

Detailed reference viewed: 39 (0 UL)
Full Text
Peer Reviewed
See detailBioremediation of 27 Micropollutants by Symbiotic Microorganisms of Wetland Macrophytes
Brunhoferova, Hana UL; Venditti, Silvia UL; Laczny, Cedric Christian UL et al

in Sustainability (2022), 14(7), 3944

Background: Micropollutants in bodies of water represent many challenges. We addressedthese challenges by the application of constructed wetlands, which represent advanced treatmenttechnology for the ... [more ▼]

Background: Micropollutants in bodies of water represent many challenges. We addressedthese challenges by the application of constructed wetlands, which represent advanced treatmenttechnology for the removal of micropollutants from water. However, which mechanisms specificallycontribute to the removal efficiency often remains unclear. Methods: Here, we focus on the removalof 27 micropollutants by bioremediation. For this, macrophytesPhragmites australis,Iris pseudacorusandLythrum salicariawere taken from established wetlands, and a special experimental set-up wasdesigned. In order to better understand the impact of the rhizosphere microbiome, we determinedthe microbial composition using 16S rRNA gene sequencing and investigated the role of identifiedgenera in the micropollutant removal of micropollutants. Moreover, we studied the colonizationof macrophyte roots by arbuscular mycorrhizal fungi, which are known for their symbiotic rela-tionship with plants. This symbiosis could result in increased removal of present micropollutants.Results: We foundIris pseudacorusto be the most successful bioremediative system, as it removed22 compounds, including persistent ones, with more than 80% efficiency. The most abundant generathat contributed to the removal of micropollutants werePseudomonas, Flavobacterium, Variovorax,Methylotenera, Reyranella, AmaricoccusandHydrogenophaga.Iris pseudacorusexhibited the highest colo-nization rate (56%). Conclusions: Our experiments demonstrate the positive impact of rhizospheremicroorganisms on the removal of micropollutants. [less ▲]

Detailed reference viewed: 39 (0 UL)
Full Text
Peer Reviewed
See detailComments on Smithies
Raleigh, Thomas UL

in Asian Journal of Philosophy (2022), 1(13),

Detailed reference viewed: 61 (2 UL)
Full Text
Peer Reviewed
See detailExplaining free will by rational capacities
Hofmann, Frank UL

in Ethical Theory and Moral Practice (2022), 25

Detailed reference viewed: 37 (3 UL)
Full Text
Peer Reviewed
See detailSpectrum of Phenotypic, Genetic, and Functional Characteristics in Epilepsy Patients With KCNC2 Pathogenic Variants 10.1212/WNL.0000000000200660
Schwarz, Niklas; Seiffert, Simone; Pendziwiat, Manuela et al

in Neurology (2022)

Background: KCNC2 encodes Kv3.2, a member of the Shaw-related (Kv3) voltage-gated potassium channel subfamily, which is important for sustained high-frequency firing and optimized energy efficiency of ... [more ▼]

Background: KCNC2 encodes Kv3.2, a member of the Shaw-related (Kv3) voltage-gated potassium channel subfamily, which is important for sustained high-frequency firing and optimized energy efficiency of action potentials in the brain. The objective of this study was to analyse the clinical phenotype, genetic background, and biophysical function of disease-associated Kv3.2 variants.Methods: Individuals with KCNC2 variants detected by exome sequencing were selected for clinical, further genetic, and functional analysis. Cases were referred through clinical and research collaborations. Selected de novo variants were examined electrophysiologically in Xenopus laevis oocytes.Results: We identified novel KCNC2 variants in 18 patients with various forms of epilepsy including genetic generalized epilepsy (GGE), developmental and epileptic encephalopathy (DEE) including early-onset absence epilepsy (EOAE), focal epilepsy (FE), and myoclonic-atonic epilepsy (MAE). 10/18 variants were de novo and 8/18 variants were classified as modifying variants. 8 drug responsive cases became seizure-free using valproic acid as monotherapy or in combination including severe DEE cases. Functional analysis of four variants demonstrated gain-of-function in three severely affected DEE cases and loss-of-function in one case with a milder phenotype (GGE) as the underlying pathomechanisms.Conclusion: These findings implicate KCNC2 as a novel causative gene for epilepsy and emphasize the critical role of KV3.2 in the regulation of brain excitability. [less ▲]

Detailed reference viewed: 28 (0 UL)
Full Text
Peer Reviewed
See detailTo Kill or Not to Kill – An experimental test of moral Decision-Making in gaming
Holl, Elisabeth UL; Steffgen, Georges UL; Melzer, André UL

in Entertainment Computing (2022)

Commercial video game titles with meaningful and morally relevant storylines are becoming increasingly popular and an intensely researched topic for entertainment scholars. In line with this research, the ... [more ▼]

Commercial video game titles with meaningful and morally relevant storylines are becoming increasingly popular and an intensely researched topic for entertainment scholars. In line with this research, the current study investigates behavioral, emotional, and personality patterns of moral decision-making in gaming with a special emphasis on selected contextual factors. In the current laboratory experiment, a total of N = 101 participants played four chapters of Detroit: Become Human for approx. 55 min. A maximum of 13 moral decisions had to be made either under time pressure or not. Before playing, participants were assigned to one of three conditions (i.e., playing morally vs. immorally framed character vs. no framing/control condition). As expected, players generally preferred to act morally regardless of character framing. Time pressure further increased the proportion of moral (vs. immoral) decision-making. Our results underline that moral decision-making is dependent on specific contexts and that morality theories can be applied to virtual gaming scenarios. [less ▲]

Detailed reference viewed: 22 (1 UL)
Full Text
Peer Reviewed
See detailActive Homework: an underresearched element of the active schools concept
Bailey, Richard; Heck, Sandra UL; Scheuer, Claude UL

in German Journal of Exercise and Sport Research (2022)

Background Most physical activity (PA) interventions targeting children focus on the school setting. However, children and young people are often less active at home. The purpose of this article is to ... [more ▼]

Background Most physical activity (PA) interventions targeting children focus on the school setting. However, children and young people are often less active at home. The purpose of this article is to review evidence from the last ten years of the contribution of physically Active Homework (AH) to the promotion of PA. Methods Using a rapid review methodology, the article reports on evidence contribution of AH and considers conditions for its effective implementation. Results Although research literature on the effects of AH is limited and missing a theoretical base, studies reporting small positive associations between AH and PA levels were identified. Increases in PA were, however, of low intensity; moderate and vigorous intensities remained relatively unchanged. Conclusions Strategies to increase PA extending beyond the school gym are needed. Further and better research is needed to understand the conditions of effective implementation of AH. Nevertheless, there is a plausibility in providing students regular opportunities to further promote PA in students’ lives by practicing movement and sports skills, and offering a flexible way of finding and pursuing meaningful activities. The fact that AH may encourage the engagement of families and communities, multiplies its potential benefits. [less ▲]

Detailed reference viewed: 61 (2 UL)
Full Text
Peer Reviewed
See detailRetrograde Procedural Memory in Parkinson’s Disease: A Cross-Sectional, Case-Control Study
Pauly, Laure UL; Pauly, Claire UL; Hansen, Maxime UL et al

in Journal of Parkinson's Disease (2022)

Background: The analysis of the procedural memory is particularly relevant in neurodegenerative disorders like Parkinson’s disease, due to the central role of the basal ganglia in procedural memory. It ... [more ▼]

Background: The analysis of the procedural memory is particularly relevant in neurodegenerative disorders like Parkinson’s disease, due to the central role of the basal ganglia in procedural memory. It has been shown that anterograde procedural memory, the ability to learn a new skill, is impaired in Parkinson’s disease. However, retrograde procedural memory, the long-term retention and execution of skills learned in earlier life stages, has not yet been systematically investigated in Parkinson’s disease. Objective: This study aims to investigate retrograde procedural memory in people with Parkinson’s disease.We hypothesized that retrograde procedural memory is impaired in people with Parkinson’s disease compared to an age- and gender-matched control group. Methods: First, we developed the CUPRO evaluation system, an extended evaluation system based on the Cube Copying Test, to distinguish the cube copying procedure, representing functioning of retrograde procedural memory, and the final result, representing the visuo-constructive abilities. Development of the evaluation system included tests of discriminant validity. Results: Comparing people with typical Parkinson’s disease (n = 201) with age- and gender-matched control subjects (n = 201), we identified cube copying performance to be significantly impaired in people with Parkinson’s disease (p = 0.008) No significant correlation was observed between retrograde procedural memory and disease duration. Conclusion: We demonstrated lower cube copying performance in people with Parkinson’s disease compared to control subjects, which suggests an impaired functioning of retrograde procedural memory in Parkinson’s disease. [less ▲]

Detailed reference viewed: 29 (0 UL)
Full Text
Peer Reviewed
See detailMachine Learning for Radio Resource Management in Multibeam GEO Satellite Systems
Ortiz Gomez, Flor de Guadalupe UL; Lei, Lei UL; Lagunas, Eva UL et al

in Electronics (2022), 11(7), 992

Satellite communications (SatComs) systems are facing a massive increase in traffic demand. However, this increase is not uniform across the service area due to the uneven distribution of users and ... [more ▼]

Satellite communications (SatComs) systems are facing a massive increase in traffic demand. However, this increase is not uniform across the service area due to the uneven distribution of users and changes in traffic demand diurnal. This problem is addressed by using flexible payload architectures, which allow payload resources to be flexibly allocated to meet the traffic demand of each beam. While optimization-based radio resource management (RRM) has shown significant performance gains, its intense computational complexity limits its practical implementation in real systems. In this paper, we discuss the architecture, implementation and applications of Machine Learning (ML) for resource management in multibeam GEO satellite systems. We mainly focus on two systems, one with power, bandwidth, and/or beamwidth flexibility, and the second with time flexibility, i.e., beam hopping. We analyze and compare different ML techniques that have been proposed for these architectures, emphasizing the use of Supervised Learning (SL) and Reinforcement Learning (RL). To this end, we define whether training should be conducted online or offline based on the characteristics and requirements of each proposed ML technique and discuss the most appropriate system architecture and the advantages and disadvantages of each approach. [less ▲]

Detailed reference viewed: 69 (13 UL)
Full Text
Peer Reviewed
See detailPrewar Public Discourse: Letters to Politika, Belgrade, 1988–1991
Glaurdic, Josip UL; Mochtak, Michal UL

in Europe-Asia Studies (2022)

We studied prewar public discourse by analysing the origin, content and sentiment of more than 4,000 letters written by people from all walks of life and published in the Belgrade broadsheet Politika ... [more ▼]

We studied prewar public discourse by analysing the origin, content and sentiment of more than 4,000 letters written by people from all walks of life and published in the Belgrade broadsheet Politika loyal to the regime of Slobodan Milošević during the three years directly preceding the Yugoslav wars. Our analysis combined lexicon-based tools of automated topic and sentiment analysis with data on the sociodemographic characteristics of the letter writers and their localities. The results of our analysis show the importance of the politicisation of a history of violence in shaping public discourse in the run-up to war. [less ▲]

Detailed reference viewed: 111 (3 UL)
Full Text
Peer Reviewed
See detailBig Five personality traits and sex
Jirjahn, Uwe; Ottenbacher, Martha UL

in Journal of Population Economics (2022), online first

Sexual well-being plays an important role in the quality of life. Against this background, we provide an economics-based approach to the relationship between the Big Five personality traits and various ... [more ▼]

Sexual well-being plays an important role in the quality of life. Against this background, we provide an economics-based approach to the relationship between the Big Five personality traits and various dimensions of sexuality. From a theoretical viewpoint, personality influences sexual well-being not only by how a person feels about sex, but also by how the person behaves in a sexual relationship. Personality shapes information sharing about sexual preferences, the way dissonant sexual preferences of the partners are handled, and the extent to which a person is committed to promises made to a partner. Using a large representative dataset from Germany, we find that personality traits play a role in a person’s own sexual satisfaction, in (the self-assessment of) fulfilling their partner’s sexual needs and desires, in sexual communication, in actual and desired frequency of sex, and in extradyadic affairs. Conscientiousness contributes to a mutually beneficial sex life and increases a person’s commitment to their partner. The opposite holds true for neuroticism. While extraversion and openness to experience help realize a mutually beneficial sex life, we find no evidence that they have a commitment value. On the contrary, extraversion is associated with lower commitment to the partner. Agreeableness contributes to higher commitment. However, agreeableness appears to make people more reluctant to express their sexual needs and desires. [less ▲]

Detailed reference viewed: 43 (2 UL)
Full Text
Peer Reviewed
See detailLarge-scale computational content analysis on magazines targeting men and women: the case of Argentina 2008-2018
Kozlowski, Diego UL; Lozano, Gabriela; Fletcher, Carla M. et al

in Feminist Media Studies (2022)

Differences in magazines content aimed specifically at women or men are a means to create and reproduce gender stereotypes. Novel computational tools allow to study differences in magazines content taking ... [more ▼]

Differences in magazines content aimed specifically at women or men are a means to create and reproduce gender stereotypes. Novel computational tools allow to study differences in magazines content taking into account all available articles. In this study, we analyse the case of two Argentinian magazines published by the same publishing house over a decade (2008–2018), advertised by the publishing house as targeting women and men respectively. Using computational tools, we are able to analyse more than 24,000 articles, which would have been an impossible task using manual content analysis methodologies. With Topic Modelling techniques we identify the main themes discussed in the magazines and quantify their different frequency between magazines over time. Then, we performed a word-frequency analysis to validate this methodology and extend the analysis to other subjects. Our results show that topics such as Family, Business and Women as sex objects present an initial bias that tends to disappear over time. Conversely, in Fashion and Science topics, the initial differences are maintained. Also, we identify a considerable increase in the use of words associated with feminism since 2015 and specifically the word abortion in 2018. Furthermore, we develop a website where everyone can perform additional analysis. [less ▲]

Detailed reference viewed: 47 (3 UL)
Full Text
Peer Reviewed
See detailXDEM study of burden distribution in iron ore pellet firing
Estupinan Donoso, Alvaro Antonio UL; Peters, Bernhard UL; Amani, H et al

in Ironmaking and Steelmaking (2022), 49(6), 615-625

Detailed reference viewed: 15 (1 UL)
Full Text
Peer Reviewed
See detailFrom ambivalence to trust: Using blockchain in customer loyalty programs
Utz, Manuel; Johanning, Simon; Roth, Tamara UL et al

in International Journal of Information Management (2022)

Global initiatives on climate protection and national sustainability policies are accelerating the replacement of fossil fuels with renewable energy sources. Many electricity suppliers are engaged in ... [more ▼]

Global initiatives on climate protection and national sustainability policies are accelerating the replacement of fossil fuels with renewable energy sources. Many electricity suppliers are engaged in efforts to monetize this transition with ‘green’ services and products, such as Green Electricity Tariffs. These promise customers that their supply includes a specific share of green electricity, yet since electricity suppliers often fail to deliver on those promises, many customers have lost trust in their suppliers. Further information asymmetries may not only exacerbate this loss of trust, but also spark distrust and lead to an overall feeling of ambivalence. Eventually, ambivalent customers may feel inclined to switch suppliers. To prevent this domino effect, electricity suppliers must eliminate ambivalence by increasing customer trust and reducing customer distrust. Here, we discuss how these challenges can be met with a customer loyalty program built on blockchain technology. We developed the program following a Design Science Research approach that facilitated refinement in four iteration and evaluation cycles. Our results indicate that the developed customer loyalty program restores trust, reduces distrust, and resolves customer ambivalence by providing four features: improved customer agency, sufficient and verifiable information, appropriate levels of usability, and unobstructed data access. [less ▲]

Detailed reference viewed: 39 (4 UL)
Full Text
Peer Reviewed
See detailFormation et marché du travail transfrontalier : quelles pistes face aux déséquilibres croissants?
Pigeron-Piroth, Isabelle UL; Hein, Vincent; Belkacem, Rachid

in UniGR-CBS Policy Paper (2022), 3

The purpose of this paper is to contribute to the reflection on the role of training in the cross-border labor market. It does so by mobilizing the debates initiated in the different Cahiers de la Grande ... [more ▼]

The purpose of this paper is to contribute to the reflection on the role of training in the cross-border labor market. It does so by mobilizing the debates initiated in the different Cahiers de la Grande Région and during a conference-debate organized online on December 1 2020 on the topic of "Inequities, Skills, and Training: What Equations for the Cross-Border Labor Market?” More precisely, this contribution aims at answering the following question: how can training and its different practices in the professional fields, but also in school and university education, mitigate the imbalances that are emerging on the labor market of the Greater Region? The document thus proposes a few lines of thought for cross-border cooperation in the field of training. [less ▲]

Detailed reference viewed: 41 (4 UL)
Full Text
See detailUnterlassung und Verhältnismäßigkeit - das 2. PatMoG als Neuanfang
Stierle, Martin UL

in GRUR (Gewerblicher Rechtsschutz und Urheberrecht) (2022), (5), 273-274

Detailed reference viewed: 51 (0 UL)
Full Text
Peer Reviewed
See detailET-Class, an Energy Transfer-based Classification of Space Debris Removal Methods and Missions
Yalcin, Baris Can UL; Martinez Luna, Carol UL; Hubert Delisle, Maxime UL et al

in Frontiers in Space Technologies (2022)

Space debris is positioned as a fatal problem for current and future space missions. Many e ective space debris removal methods have been proposed in the past decade, and several techniques have been ... [more ▼]

Space debris is positioned as a fatal problem for current and future space missions. Many e ective space debris removal methods have been proposed in the past decade, and several techniques have been either tested on the ground or in parabolic ight experiments. Nevertheless, no uncooperative debris has been removed from any orbit until this moment. Therefore, to expand this research eld and progress the development of space debris removal technologies, this paper reviews and compares the existing technologies with past, present, and future methods and missions. Moreover, since one of the critical problems when designing space debris removal solutions is how to transfer the energy between the chaser/de-orbiting kit and target during the rst interaction, this paper proposes a novel classi cation approach, named ET-Class (Energy Transfer Class). This classi cation approach provides an energy-based perspective to the space debris phenomenon by classifying how existing methods dissipate or store energy during rst contact. [less ▲]

Detailed reference viewed: 110 (31 UL)
Full Text
Peer Reviewed
See detailAvoiding bias when inferring race using name-based approaches
Kozlowski, Diego UL; Murray, Dakota S.; Bell, Alexis et al

in PLoS ONE (2022), 3(17), 0264270

Racial disparity in academia is a widely acknowledged problem. The quantitative understanding of racial-based systemic inequalities is an important step towards a more equitable research system. However ... [more ▼]

Racial disparity in academia is a widely acknowledged problem. The quantitative understanding of racial-based systemic inequalities is an important step towards a more equitable research system. However, because of the lack of robust information on authors’ race, few large-scale analyses have been performed on this topic. Algorithmic approaches offer one solution, using known information about authors, such as their names, to infer their perceived race. As with any other algorithm, the process of racial inference can generate biases if it is not carefully considered. The goal of this article is to assess the extent to which algorithmic bias is introduced using different approaches for name-based racial inference. We use information from the U.S. Census and mortgage applications to infer the race of U.S. affiliated authors in the Web of Science. We estimate the effects of using given and family names, thresholds or continuous distributions, and imputation. Our results demonstrate that the validity of name-based inference varies by race/ethnicity and that threshold approaches underestimate Black authors and overestimate White authors. We conclude with recommendations to avoid potential biases. This article lays the foundation for more systematic and less-biased investigations into racial disparities in science. [less ▲]

Detailed reference viewed: 42 (0 UL)
Full Text
Peer Reviewed
See detailComplex, but in a good way? How to represent encryption to non-experts through text and visuals – Evidence from expert co-creation and a vignette experiment
Distler, Verena UL; Gutfleisch, Tamara; Lallemand, Carine UL et al

in Computers in Human Behavior Reports (2022), 4

An ongoing discussion in the field of usable privacy and security debates whether security mechanisms should be visible to end-users during interactions with technology, or hidden away. This paper ... [more ▼]

An ongoing discussion in the field of usable privacy and security debates whether security mechanisms should be visible to end-users during interactions with technology, or hidden away. This paper addresses this question using a mixed-methods approach, focusing on encryption as a mechanism for confidentiality during data transmission on a smartphone application. In study 1, we conducted a qualitative co-creation study with security and Human-Computer Interaction (HCI) experts (N = 9) to create appropriate textual and visual representations of the security mechanism encryption in data transmission. We investigated this question in two contexts: online banking and e-voting. In study 2, we put these ideas to the test by presenting these visual and textual representations to non-expert users in an online vignette experiment (N = 2180). We found a statistically significant and positive effect of the textual representation of encryption on perceived security and understanding, but not on user experience (UX). More complex text describing encryption resulted in higher perceived security and more accurate understanding. The visual representation of encryption had no statistically significant effect on perceived security, UX or understanding. Our study contributes to the larger discussion regarding visible instances of security and their impact on user perceptions. [less ▲]

Detailed reference viewed: 55 (5 UL)
Full Text
Peer Reviewed
See detailCooperative Multi-Agent Deep Reinforcement Learning for Resource Management in Full Flexible VHTS Systems
Ortiz Gomez, Flor de Guadalupe UL; Tarchi, Daniele; Martinez, Ramon et al

in IEEE Transactions on Cognitive Communications and Networking (2022), 8(1),

Very high throughput satellite (VHTS) systems are expected to have a huge increase in traffic demand in the near future. Nevertheless, this increase will not be uniform over the entire service area due to ... [more ▼]

Very high throughput satellite (VHTS) systems are expected to have a huge increase in traffic demand in the near future. Nevertheless, this increase will not be uniform over the entire service area due to the non-uniform distribution of users and changes in traffic demand during the day. This problem is addressed by using flexible payload architectures, which allow the allocation of payload resources flexibly to meet the traffic demand of each beam, leading to dynamic resource management (DRM) approaches. However, DRM adds significant complexity to VHTS systems, so in this paper we discuss the use of one reinforcement learning (RL) algorithm and two deep reinforcement learning (DRL) algorithms to manage the resources available in flexible payload architectures for DRM. These algorithms are Q-Learning (QL), Deep Q-Learning (DQL) and Double Deep Q-Learning (DDQL) which are compared based on their performance, complexity and added latency. On the other hand, this work demonstrates the superiority a cooperative multiagent (CMA) decentralized distribution has over a single agent (SA). [less ▲]

Detailed reference viewed: 34 (8 UL)
Full Text
Peer Reviewed
See detailModal characterisation of simulation relations in probabilistic concurrent games
Zhang, Chenyi; Pang, Jun UL

in Science of Computer Programming (2022), 215

Detailed reference viewed: 29 (1 UL)
Full Text
Peer Reviewed
See detailPromoting participative policy coherence for sustainable development Inclusive dialogue through the “pull-push-match” methodology
Koff, Harlan UL

in Regions & Cohesion (2022), 12(1), 1-24

Policy Coherence for Sustainable Development (PCSD) has promoted sustainability through policy coordination, but to what extent does it respond to the needs of local communities? Scholars of PCSD have ... [more ▼]

Policy Coherence for Sustainable Development (PCSD) has promoted sustainability through policy coordination, but to what extent does it respond to the needs of local communities? Scholars of PCSD have acknowledged how it has been considered as an end in itself rather than a means to achieve normative impact. A major limit of PCSD has been its institutionalized nature, as mechanisms for social participation have not been highlighted in implementation strategies. This article addresses this issue. It proposes “pull-push-match” as a methodology for the es-tablishment of participative PCSD. The article, co-authored by a team of researchers and practitioners from Mexico, addresses PCSD in relation to Indigenous communities. [less ▲]

Detailed reference viewed: 25 (0 UL)
Full Text
Peer Reviewed
See detailEditorial - Le plan d'action de la Commission pour l'économie sociale : un cadre pour avancer ?
Corbisier, Isabelle UL

in tijdschrift voor rechtspersoon en vennootschap - revue pratique des sociétés (2022), (2), 65-66

Detailed reference viewed: 31 (3 UL)
Full Text
Peer Reviewed
See detailRefining the Spady–Tinto approach: the roles of individual characteristics and institutional support in students’ higher education dropout intentions in Luxembourg
Hadjar, Andreas UL; Haas, Christina; Gewinner, Irina

in European Journal of Higher Education (2022), early online

Based on the classic models developed by Spady and Tinto on the link between social and academic integration and dropout, we propose a refined model to explain dropout intentions – relating to dropout ... [more ▼]

Based on the classic models developed by Spady and Tinto on the link between social and academic integration and dropout, we propose a refined model to explain dropout intentions – relating to dropout from higher education (HE) and dropout from a specific study programme – that more strongly emphasises individual background characteristics (e.g. gender, social origin, and immigration background). Additionally, we consider students’ satisfaction with the institutional support structures. Using Eurostudent survey data, this conceptual model was tested using structural equation modelling in the international and diverse HE context of Luxembourg. While the fitted model confirmed most of the expected associations of the conventional Spady–Tinto approach, initial study commitment was not linked to social integration (contacts with fellow students). We were able to identify satisfaction with institutional support as a key factor in explaining dropout intention, thus contributing to existing knowledge. In addition, we found that the link between socioeconomic factors and dropout intention from a study programme is not entirely mediated by the Spady–Tinto factors of commitment and integration. [less ▲]

Detailed reference viewed: 51 (4 UL)
Full Text
Peer Reviewed
See detailLes relations ambiguës du droit de l'économie sociale et solidaire et de l'économie circulaire
Hiez, David UL

in Revue juridique de l'environnement (2022), 47(1),

Detailed reference viewed: 87 (2 UL)
Full Text
Peer Reviewed
See detailOpinion Statement ECJ-TF 3/2021 on the ECJ Decision of 19 March 2021 in MK v. Autoridade Tributária e Aduaneira (Case C-388/19) on the Option of Taxpayers to Avoid Discriminatory Taxation of Capital Gains
Kofler, Georg; Garcia Prats, Alfredo; Haslehner, Werner UL et al

in European Taxation (2022)

In this case note, the CFE ECJ Task Force comments on the ECJ decision in MK v. Autoridade Tributária e Aduaneira (Case C-388/19) of 18 March 2021. The Court confirmed its previous case law and held that ... [more ▼]

In this case note, the CFE ECJ Task Force comments on the ECJ decision in MK v. Autoridade Tributária e Aduaneira (Case C-388/19) of 18 March 2021. The Court confirmed its previous case law and held that the Portuguese (optional) regime for taxation of capital gains from immovable property of non-residents was contrary to the free movement of capital under article 63 of the TFEU since non-residents were taxed less favourably than residents. [less ▲]

Detailed reference viewed: 19 (0 UL)
Full Text
Peer Reviewed
See detailBOOK REVIEW: Inna GANSHOW, 100 Jahre Russen in Luxemburg. Geschichte einer atomisierten Diaspora.
Grosbois, Thierry; Ganschow, Inna UL

in Hemecht: Zeitschrift für Luxemburger Geschichte (2022), 1(74), 110-112

"L’immigration russe au Luxembourg est directement liée aux soubresauts de la crise internationale induite par la chute de l’empire tsariste, de la révolution bolchévique, de la répression soviétique ... [more ▼]

"L’immigration russe au Luxembourg est directement liée aux soubresauts de la crise internationale induite par la chute de l’empire tsariste, de la révolution bolchévique, de la répression soviétique, puis de l’éclatement imprévu de l’URSS. L’ouvrage nous rappelle, en ces temps actuels où l’immigration est souvent présentée comme un danger identitaire, au point de criminaliser les passages aux frontières, que ce phénomène a existé tout au long de l’Histoire de l’Humanité et qu’il fait partie, en réalité, de la nature humaine." [less ▲]

Detailed reference viewed: 16 (0 UL)
Full Text
Peer Reviewed
See detailReducibility of n-ary semigroups: from quasitriviality towards idempotency
Couceiro, Miguel; Devillet, Jimmy UL; Marichal, Jean-Luc UL et al

in Beiträge zur Algebra und Geometrie (2022), 63(1), 149-166

Let $X$ be a nonempty set. Denote by $\mathcal{F}^n_k$ the class of associative operations $F\colon X^n\to X$ satisfying the condition $F(x_1,\ldots,x_n)\in\{x_1,\ldots,x_n\}$ whenever at least $k$ of the ... [more ▼]

Let $X$ be a nonempty set. Denote by $\mathcal{F}^n_k$ the class of associative operations $F\colon X^n\to X$ satisfying the condition $F(x_1,\ldots,x_n)\in\{x_1,\ldots,x_n\}$ whenever at least $k$ of the elements $x_1,\ldots,x_n$ are equal to each other. The elements of $\mathcal{F}^n_1$ are said to be quasitrivial and those of $\mathcal{F}^n_n$ are said to be idempotent. We show that $\mathcal{F}^n_1=\cdots =\mathcal{F}^n_{n-2}\subseteq\mathcal{F}^n_{n-1}\subseteq\mathcal{F}^n_n$ and we give conditions on the set $X$ for the last inclusions to be strict. The class $\mathcal{F}^n_1$ was recently characterized by Couceiro and Devillet \cite{CouDev}, who showed that its elements are reducible to binary associative operations. However, some elements of $\mathcal{F}^n_n$ are not reducible. In this paper, we characterize the class $\mathcal{F}^n_{n-1}\setminus\mathcal{F}^n_1$ and show that its elements are reducible. We give a full description of the corresponding reductions and show how each of them is built from a quasitrivial semigroup and an Abelian group whose exponent divides $n-1$. [less ▲]

Detailed reference viewed: 193 (39 UL)
Full Text
Peer Reviewed
See detail"Relever l’esprit public en province". Convergences polémiques entre George Sand et Claude Tillier
Saintes, Laetitia UL

in Romantisme (2022), 1/2022

Premier texte ouvertement politique de George Sand, Fanchette, lettre de Blaise Bonnin à Claude Germain paraît en 1843 dans La Revue indépendante, publication qu’elle a cofondée avec Louis Viardot et ... [more ▼]

Premier texte ouvertement politique de George Sand, Fanchette, lettre de Blaise Bonnin à Claude Germain paraît en 1843 dans La Revue indépendante, publication qu’elle a cofondée avec Louis Viardot et Pierre Leroux. Or la brochure a peiné à trouver preneur : la frilosité des imprimeurs locaux, jointe à l’hostilité du ministériel Journal de l’Indre, achèvent de convaincre Sand de fonder un périodique répondant au « besoin de relever l’esprit public en province, et de le mettre sur un pied, non de rivalité, mais d’égalité avec celui de la métropole ». Ce sera L’Éclaireur de l’Indre, journal des départements de l’Indre, du Cher et de la Creuse, lancé en septembre 1844. Envisageant les « petites villes » comme des « antres de corruption, où l’intimidation assure l’impunité au vice et au crime tout autant qu’à Paris le mystère », Sand développe dans les écrits polémiques qu’elle publie dès lors et jusqu’à 1851 un propos proche, sur le plan thématique comme sur le plan rhétorique, de celui de Claude Tillier, pamphlétaire du Nivernais voisin qu’elle cite parfois textuellement. Cofondateur en 1831 de L’Indépendant de Clamecy, périodique républicain, Tillier a rejoint en 1841 les rangs de L’Association, journal de la Nièvre, feuille d’opposition dont il devient bientôt l’un des principaux rédacteurs. Ayant lui aussi à lutter contre la presse ministérielle – dont L’Écho de la Nièvre, organe de la préfecture – et contre l’hostilité affichée des notables locaux, peinant de ce fait à trouver un imprimeur acceptant de publier ses pamphlets, Tillier, républicain revendiqué, n’en défend pas moins dans ce journal comme dans ses pamphlets un propos progressiste où l’idée de justice sociale occupe une place centrale, à l’opposé du libéralisme économique et social débridé qui caractérise la monarchie de Juillet. Le geste polémique de Tillier comme celui de Sand donnent à penser sur la possibilité d’une parole polémique et plus avant sur ses modalités sous le régime de Juillet. Les deux écrivains affrontent, en effet, des réalités différentes. Alors que Tillier, relativement méconnu hors du Nivernais, cherche à faire connaître son œuvre dans la capitale, Sand, écrivaine déjà fameuse, doit pour sa part affronter l’esprit du temps, hostile aux incursions des femmes en terre polémique. Cela conditionne fortement la forme que prennent leurs paroles polémiques respectives, depuis leur support (de l’article de journal à la brochure) jusqu’aux modalités rhétoriques et esthétiques. Aussi cette contribution entend-elle éclairer un aspect méconnu de l’œuvre de Sand et faire redécouvrir celle de Tillier en les étudiant sous divers angles ; on envisagera d’abord les supports de leur propos polémique avant de se pencher sur les thématiques qui leur sont communes. On établira ensuite l’horizon idéologique présidant à ces productions destinées à « relever l’esprit public en province » en y défendant les idées républicaines et socialistes, avant d’étudier les modalités rhétoriques de ces deux œuvres polémiques représentatives de l’esprit du temps. [less ▲]

Detailed reference viewed: 16 (0 UL)
Full Text
Peer Reviewed
See detailThe “OpenLux revelations”: Who is to be blamed?
Pantazatou, Aikaterini UL

in Cahiers de fiscalité luxembourgeoise et européenne (2022), 1(1),

Detailed reference viewed: 29 (3 UL)
Full Text
Peer Reviewed
See detailLe droit à la sauce piquante n°26 - Mars 2022
Hiez, David UL; Laurent, Rémi

in Le droit à la sauce piquante (2022), 26

Detailed reference viewed: 37 (1 UL)
Full Text
Peer Reviewed
See detailFreins et perspectives d’une union budgétaire européenne
Allemand, Frederic UL; Creel, Jérôme

in Revue des juristes de SciencesPo (2022), 22

Detailed reference viewed: 19 (5 UL)
Full Text
Peer Reviewed
See detailStillborn Banking Union: Explaining Ineffective European Union Bank Resolution Rules
Howarth, David UL; Asimakopoulos, Ioannis

in Journal of Common Market Studies (2022), 60(2), 264-282

Our contribution demonstrates and explains the ineffectiveness of European Union (EU) bank resolution rules, a core element of Banking Union. This inadequacy owes in large part to the limited access to ... [more ▼]

Our contribution demonstrates and explains the ineffectiveness of European Union (EU) bank resolution rules, a core element of Banking Union. This inadequacy owes in large part to the limited access to and insufficient availability of EU resolution funds and inadequate national deposit guarantee schemes in most EU member states, in conjunction with the relatively high minimum requirements for own funds and eligible liabilities (MREL) for many EU banks. In many cases, these requirements are unlikely ever to be met – particularly for retail banks most likely to require resolution in the euro periphery. We offer a liberal intergovernmentalist analysis to explain the inadequacy of the EU resolution regime by examining German and French government preferences on EU rules on bank capital requirements agreed earlier in 2013 and national deposit guarantee schemes agreed in 2014. These government preferences were shaped significantly by the preferences of national banks and bank associations. [less ▲]

Detailed reference viewed: 173 (16 UL)
Full Text
Peer Reviewed
See detailAn integrated security hardening optimization for dynamic networks using security and availability modeling with multi-objective algorithm
Y. Enoch, Simon; Rodrigues de Mendonça Neto, Júlio UL; B. Hong, Jin et al

in Computer Networks (2022)

The dynamicity of today’s networks has created uncertainties for security administrators about the defense options to deploy. In this paper, we consider the administrator’s challenge of selecting and ... [more ▼]

The dynamicity of today’s networks has created uncertainties for security administrators about the defense options to deploy. In this paper, we consider the administrator’s challenge of selecting and deploying the best set of heterogeneous security hardening solutions for dynamic networks given multiple constraints (such as fixed budget, availability of hardening measures, performance degradation, non-patchable vulnerabilities, etc). The current state of the art does not focus on the dynamic characteristic of modern networks, where the effectiveness of defenses is affected by changes in the networks. Hence, we approach this challenge by developing an integrated method to effectively compute optimal defense solutions for dynamic networks given multiple objectives and constraints. The proposed approach works in the following five phases: (1) input/data collection, (2) model construction (using temporal-graph-based security model and Generalized Stochastic Petri Nets), (3) defense evaluator (based on security metrics), (4) Pareto optimal set evaluator (using Non dominated Sorting Genetic Algorithm), and (5) optimal solution evaluator (based on Weighted Sum Model). To demonstrate the feasibility of the proposed approach, we use a real-world case study while taking into account both the vulnerabilities that are patchable and non-patchable. We investigated the sensitivity of the model parameters based on the dynamic network, and the result showed a good result for values from 0.1–0.4 for the mutation probability while the crossover did not change for all the values. Furthermore, we compared the dynamic network optimization results to a static network and the evaluation shows that our proposed approach could aid a security administrator in selecting the best defense options to deploy for modern networks that are dynamic, with at least 75% and 62.50% of the defense Pareto points appearing in consecutive and in all network states, respectively. Moreover, it also provides an insight into the benefit of each defense option before the deployment. [less ▲]

Detailed reference viewed: 33 (1 UL)
Full Text
Peer Reviewed
See detailEvaluation of the wound healing properties of South African medicinal plants using zebrafish and in vitro bioassays
Mhlongo, Fikile; Cordero Maldonado, Maria Lorena UL; Crawford, Alexander UL et al

in Journal of Ethnopharmacology (2022), 286

Ethnopharmacological relevance In South Africa, medicinal plants have a history of traditional use, with many species used for treating wounds. The scientific basis of such uses remains largely unexplored ... [more ▼]

Ethnopharmacological relevance In South Africa, medicinal plants have a history of traditional use, with many species used for treating wounds. The scientific basis of such uses remains largely unexplored. Aim of the study To screen South African plants used ethnomedicinally for wound healing based on their pro-angiogenic and wound healing activity, using transgenic zebrafish larvae and cell culture assays. [less ▲]

Detailed reference viewed: 64 (0 UL)
Full Text
Peer Reviewed
See detailUnifying Quantum and Classical Speed Limits on Observables
García-Pintos, Luis Pedro; Nicholson, Schuyler B.; Green, Jason R. et al

in Physical Review X (2022)

The presence of noise or the interaction with an environment can radically change the dynamics of observables of an otherwise isolated quantum system. We derive a bound on the speed with which observables ... [more ▼]

The presence of noise or the interaction with an environment can radically change the dynamics of observables of an otherwise isolated quantum system. We derive a bound on the speed with which observables of open quantum systems evolve. This speed limit is divided into Mandelstam and Tamm’s original time-energy uncertainty relation and a time-information uncertainty relation recently derived for classical systems, and both are generalized to open quantum systems. By isolating the coherent and incoherent contributions to the system dynamics, we derive both lower and upper bounds on the speed of evolution.We prove that the latter provide tighter limits on the speed of observables than previously known quantum speed limits and that a preferred basis of speed operators serves to completely characterize the observables that saturate the speed limits. We use this construction to bound the effect of incoherent dynamics on the evolution of an observable and to find the Hamiltonian that gives the maximum coherent speedup to the evolution of an observable. [less ▲]

Detailed reference viewed: 44 (2 UL)
Full Text
Peer Reviewed
See detailAn Analysis of Cholesteric Spherical Reflector Identifiers for Object Authenticity Verification
Arenas Correa, Monica Patricia UL; Demirci, Huseyin UL; Lenzini, Gabriele UL

in Machine Learning and Knowledge Extraction (2022), 4(1), 222-239

Arrays of Cholesteric Spherical Reflectors (CSRs), microscopic cholesteric liquid crystals in a spherical shape, have been argued to become a game-changing technology in anti-counterfeiting. Used to build ... [more ▼]

Arrays of Cholesteric Spherical Reflectors (CSRs), microscopic cholesteric liquid crystals in a spherical shape, have been argued to become a game-changing technology in anti-counterfeiting. Used to build identifiable tags or coating, called CSR IDs, they can supply objects with unclonable fingerprint-like characteristics, making it possible to authenticate objects. In a previous study, we have shown how to extract minutiæ from CSR IDs. In this journal version, we build on that previous research, consolidate the methodology, and test it over CSR IDs obtained by different production processes. We measure the robustness and reliability of our procedure on large and variegate sets of CSR IDs’ images taken with a professional microscope (Laboratory Data set) and with a microscope that could be used in a realistic scenario (Realistic Data set). We measure intra-distance and interdistance, proving that we can distinguish images coming from the same CSR ID from images of different CSR IDs. However, without surprise, images in Laboratory Data set have an intra-distance that on average is less, and with less variance, than the intra-distance between responses from Realistic Data set. With this evidence, we discuss a few requirements for an anti-counterfeiting technology based on CSRs. [less ▲]

Detailed reference viewed: 34 (2 UL)
Full Text
Peer Reviewed
See detailInverse deformation analysis: an experimental and numerical assessment using the FEniCS Project
Mazier, Arnaud UL; Bilger, Alexandre; Forte, Antonio E. et al

in Engineering with Computers (2022)

In this paper, we develop a framework for solving inverse deformation problems using the FEniCS Project finite-element software. We validate our approach with experimental imaging data acquired from a ... [more ▼]

In this paper, we develop a framework for solving inverse deformation problems using the FEniCS Project finite-element software. We validate our approach with experimental imaging data acquired from a soft silicone beam under gravity. In contrast with inverse iterative algorithms that require multiple solutions of a standard elasticity problem, the proposed method can compute the undeformed configuration by solving only one modified elasticity problem. This modified problem has a complexity comparable to the standard one. The framework is implemented within an open-source pipeline enabling the direct and inverse deformation simulation directly from imaging data. We use the high-level unified form language (UFL) of the FEniCS Project to express the finite-element model in variational form and to automatically derive the consistent Jacobian. Consequently, the design of the pipeline is flexible: for example, it allows the modification of the constitutive models by changing a single line of code. We include a complete working example showing the inverse deformation of a beam deformed by gravity as supplementary material. [less ▲]

Detailed reference viewed: 215 (33 UL)
Full Text
Peer Reviewed
See detailTheoretical Considerations about Energy Transition in Luxembourg
Arababadi, Ali; Leyer, Stephan UL; Hansen, Joachim UL et al

in Environmental Sciences Proceedings (2022)

The energy transition is a certain phenomenon in the future which as of yet has no agreed definition. It involves a shift in the dominant ‘rules of the game’—a transformation of established technologies ... [more ▼]

The energy transition is a certain phenomenon in the future which as of yet has no agreed definition. It involves a shift in the dominant ‘rules of the game’—a transformation of established technologies and societal practices and movement from one dynamic equilibrium to another, typically stretching over several generations. The study aims to explore some salient features of this transition that Luxembourg will face using a theoretical approach. The study was limited to the transportation sector, residential sector, and public dimension. it has been shown how the availability of different contextual factors in Luxembourg will raise the need for new pathways to move towards this transition. The alternative pathways have been argued, to [less ▲]

Detailed reference viewed: 24 (3 UL)
Full Text
Peer Reviewed
See detailHPV-related quality of life in diagnosed women: A longitudinal study
Santos, B Daiana; Moreira, Celia S; Teixeira Santos, Ana Carolina UL et al

in Journal of Health Psychology (2022)

Detailed reference viewed: 41 (3 UL)
Full Text
Peer Reviewed
See detailComing Together of Bayesian Inference and Skew Spherical Data
Ley, Christophe UL; Nakhaei Rad, Najmeh; Bekker, Andriette et al

in Frontiers in Big Data (2022)

This paper presents Bayesian directional data modeling via the skew-rotationally-symmetric Fisher-von Mises-Langevin (FvML) distribution. The prior distributions for the parameters are a pivotal building ... [more ▼]

This paper presents Bayesian directional data modeling via the skew-rotationally-symmetric Fisher-von Mises-Langevin (FvML) distribution. The prior distributions for the parameters are a pivotal building block in Bayesian analysis, therefore, the impact of the proposed priors will be quantified using the Wasserstein Impact Measure (WIM) to guide the practitioner in the implementation process. For the computation of the posterior, modifications of Gibbs and slice samplings are applied for generating samples. We demonstrate the applicability of our contribution via synthetic and real data analyses. Our investigation paves the way for Bayesian analysis of skew circular and spherical data. [less ▲]

Detailed reference viewed: 14 (0 UL)
Full Text
Peer Reviewed
See detailUltrafast multidimensional spectroscopy with field resolution and noncollinear geometry at mid-infrared frequencies
Deckert, Thomas UL; Allerbeck, Jonas; Kurihara, Takayuki et al

in New Journal of Physics (2022)

Energetic correlations and their dynamics govern the fundamental properties of condensed matter materials. Ultrafast multidimensional spectroscopy in the mid infrared is an advanced technique to study ... [more ▼]

Energetic correlations and their dynamics govern the fundamental properties of condensed matter materials. Ultrafast multidimensional spectroscopy in the mid infrared is an advanced technique to study such coherent low-energy dynamics. The intrinsic many-body phenomena in functional solid-state materials, in particular few-layer samples, remain widely unexplored to this date, because complex and weak sample responses demand versatile and sensitive detection. Here, we present a novel setup for ultrafast multidimensional spectroscopy with noncollinear geometry and complete field resolution in the 15–40 THz range. Electric fields up to few-100 kV cm−1 drive coherent dynamics in a perturbative regime, and an advanced modulation scheme allows to detect nonlinear signals down to a few tens of V cm−1 entirely background-free with high sensitivity and full control over the geometric phase-matching conditions. Our system aims at the investigation of correlations and many-body interactions in condensed matter systems at low energy. Benchmark measurements on bulk indium antimonide reveal a strong six-wave mixing signal and map ultra- fast changes of the band structure with access to amplitude and phase information. Our results pave the way towards the investigation of functional thin film materials and few-layer samples. [less ▲]

Detailed reference viewed: 58 (2 UL)
Full Text
See detailLes falsificateurs de l'histoire:L'ADR et le "Klëppelkrich"
Scuto, Denis UL

in Tageblatt (2022)

Detailed reference viewed: 66 (1 UL)
Full Text
Peer Reviewed
See detailTkT: Automatic Inference of Timed and Extended Pushdown Automata
Pastore, Fabrizio UL; Micucci, Daniela; Guzman, Michell et al

in IEEE Transactions on Software Engineering (2022), 48(2), 617-636

To mitigate the cost of manually producing and maintaining models capturing software specifications, specification mining techniques can be exploited to automatically derive up-to-date models that ... [more ▼]

To mitigate the cost of manually producing and maintaining models capturing software specifications, specification mining techniques can be exploited to automatically derive up-to-date models that faithfully represent the behavior of software systems. So far, specification mining solutions focused on extracting information about the functional behavior of the system, especially in the form of models that represent the ordering of the operations. Well-known examples are finite state models capturing the usage protocol of software interfaces and temporal rules specifying relations among system events. Although the functional behavior of a software system is a primary aspect of concern, there are several other non-functional characteristics that must be typically addressed jointly with the functional behavior of a software system. Efficiency is one of the most relevant characteristics. In fact, an application delivering the right functionalities inefficiently has a big chance to not satisfy the expectation of its users. Interestingly, the timing behavior is strongly dependent on the functional behavior of a software system. For instance, the timing of an operation depends on the functional complexity and size of the computation that is performed. Consequently, models that combine the functional and timing behaviors, as well as their dependencies, are extremely important to precisely reason on the behavior of software systems. In this paper, we address the challenge of generating models that capture both the functional and timing behavior of a software system from execution traces. The result is the Timed k-Tail (TkT) specification mining technique, which can mine finite state models that capture such an interplay: the functional behavior is represented by the possible order of the events accepted by the transitions, while the timing behavior is represented through clocks and clock constraints of different nature associated with transitions. Our empirical evaluation with several libraries and applications show that TkT can generate accurate models, capable of supporting the identification of timing anomalies due to overloaded environment and performance faults. Furthermore, our study shows that TkT outperforms state-of-the-art techniques in terms of scalability and accuracy of the mined models. [less ▲]

Detailed reference viewed: 109 (12 UL)
Full Text
Peer Reviewed
See detailAutomatic Generation of Acceptance Test Cases from Use Case Specifications: an NLP-based Approach
Wang, Chunhui UL; Pastore, Fabrizio UL; Göknil, Arda UL et al

in IEEE Transactions on Software Engineering (2022), 48(2), 585-616

Acceptance testing is a validation activity performed to ensure the conformance of software systems with respect to their functional requirements. In safety critical systems, it plays a crucial role since ... [more ▼]

Acceptance testing is a validation activity performed to ensure the conformance of software systems with respect to their functional requirements. In safety critical systems, it plays a crucial role since it is enforced by software standards, which mandate that each requirement be validated by such testing in a clearly traceable manner. Test engineers need to identify all the representative test execution scenarios from requirements, determine the runtime conditions that trigger these scenarios, and finally provide the input data that satisfy these conditions. Given that requirements specifications are typically large and often provided in natural language (e.g., use case specifications), the generation of acceptance test cases tends to be expensive and error-prone. In this paper, we present Use Case Modeling for System-level, Acceptance Tests Generation (UMTG), an approach that supports the generation of executable, system-level, acceptance test cases from requirements specifications in natural language, with the goal of reducing the manual effort required to generate test cases and ensuring requirements coverage. More specifically, UMTG automates the generation of acceptance test cases based on use case specifications and a domain model for the system under test, which are commonly produced in many development environments. Unlike existing approaches, it does not impose strong restrictions on the expressiveness of use case specifications. We rely on recent advances in natural language processing to automatically identify test scenarios and to generate formal constraints that capture conditions triggering the execution of the scenarios, thus enabling the generation of test data. In two industrial case studies, UMTG automatically and correctly translated 95% of the use case specification steps into formal constraints required for test data generation; furthermore, it generated test cases that exercise not only all the test scenarios manually implemented by experts, but also some critical scenarios not previously considered. [less ▲]

Detailed reference viewed: 197 (32 UL)
See detailDie Ursprünge von St. Vith und seine Entwicklung bis ins 15. Jahrhundert
Pauly, Michel UL

in Zwischen Venn und Schneifel (2022), 58(2), 23-27

Detailed reference viewed: 12 (1 UL)
Full Text
Peer Reviewed
See detailAutomated Reverse Engineering of Role-based Access Control Policies of Web Applications
Le, Ha Thanh UL; Shar, Lwin Khin UL; Bianculli, Domenico UL et al

in Journal of Systems and Software (2022), 184

Access control (AC) is an important security mechanism used in software systems to restrict access to sensitive resources. Therefore, it is essential to validate the correctness of AC implementations with ... [more ▼]

Access control (AC) is an important security mechanism used in software systems to restrict access to sensitive resources. Therefore, it is essential to validate the correctness of AC implementations with respect to policy specifications or intended access rights. However, in practice, AC policy specifications are often missing or poorly documented; in some cases, AC policies are hard-coded in business logic implementations. This leads to difficulties in validating the correctness of policy implementations and detecting AC defects. In this paper, we present a semi-automated framework for reverse-engineering of AC policies from Web applications. Our goal is to learn and recover role-based access control (RBAC) policies from implementations, which are then used to validate implemented policies and detect AC issues. Our framework, built on top of a suite of security tools, automatically explores a given Web application, mines domain input specifications from access logs, and systematically generates and executes more access requests using combinatorial test generation. To learn policies, we apply machine learning on the obtained data to characterize relevant attributes that influence AC. Finally, the inferred policies are presented to the security engineer, for validation with respect to intended access rights and for detecting AC issues. Inconsistent and insufficient policies are highlighted as potential AC issues, being either vulnerabilities or implementation errors. We evaluated our approach on four Web applications (three open-source and a proprietary one built by our industry partner) in terms of the correctness of inferred policies. We also evaluated the usefulness of our approach by investigating whether it facilitates the detection of AC issues. The results show that 97.8% of the inferred policies are correct with respect to the actual AC implementation; the analysis of these policies led to the discovery of 64 AC issues that were reported to the developers. [less ▲]

Detailed reference viewed: 102 (12 UL)
Full Text
Peer Reviewed
See detailLa voie des réformes de l'UEM: "le futur ancien n'est pas notre avenir"
Allemand, Frederic UL

in Revue des Affaires Européennes (2022), 2021(3), 545-563

of a set of reforms in the Economic and Monetary Union (EMU). The economic union is particularly concerned. The reforms implemented so far have been carried out without any change to the substance of the ... [more ▼]

of a set of reforms in the Economic and Monetary Union (EMU). The economic union is particularly concerned. The reforms implemented so far have been carried out without any change to the substance of the EU constitutional framework, given that they made use of both the extensive substantive scope of EU legislative decision-making power in the field of economic union and the development of institutional practices to fill gaps or complement the EU legal framework. In so doing, EMU developments are condemned to take place within the limits of constitutional provisions that are outdated in many respects, increasingly complex, confusing and unreadable. Achieving a genuine EMU means breaking out of this status quo. Constitutional revision is no longer an option: it is a prerequisite for the well functioning of EMU. [less ▲]

Detailed reference viewed: 18 (1 UL)
Full Text
Peer Reviewed
See detailWarehousing asylum seekers: The logistification of reception
Vianelli, Lorenzo UL

in Environment and Planning. D, Society and Space (2022), 40(1), 41-59

This article employs the analytical perspective of logistics to explore a key, yet quite overlooked, aspect of the functioning of the EU border regime: the reception and associated territorial ... [more ▼]

This article employs the analytical perspective of logistics to explore a key, yet quite overlooked, aspect of the functioning of the EU border regime: the reception and associated territorial distribution of newly arrived asylum seekers. Drawing on qualitative data collected at the height of ‘refugee reception crisis’ in multiple contexts in Italy and Sweden, the article shows how reception is undergoing a process of ‘logistification’. In this process, organisational and logistical concerns prevail over the care for those who are assisted, and reception is turned into a logistical matter of moving and accommodating asylum seekers. Crucial to this process of ‘logistification’ is the warehousing of asylum seekers – an art of government that seeks to objectify asylum seekers through their depersonalisation, victimisation and (im)mobilisation. The article argues that the ‘logistification’ of reception not only has dehumanising effects on asylum seekers, but also exposes the attempt to make profit out their management and transfer. This creates the conditions for the development of a reception industry in which the very presence of asylum seekers is valorised for the profit of a whole range of actors who ensure the reproduction, transfer, knowledge and control of those hosted in reception facilities. [less ▲]

Detailed reference viewed: 53 (7 UL)
Full Text
Peer Reviewed
See detailMethod of Rain Attenuation Prediction Based on Long–Short Term Memory Network
Cornejo, Andres; Landeros, Salvador; Matias, Jose Maria et al

in Neural Processing Letters (2022)

Rain attenuation events are one of the foremost drawbacks in satellite communications, impairing satellite link availability. For this reason, it is necessary to foresee rain events to avoid an outage of ... [more ▼]

Rain attenuation events are one of the foremost drawbacks in satellite communications, impairing satellite link availability. For this reason, it is necessary to foresee rain events to avoid an outage of the satellite link. In this paper, we propose and develop a method based on Machine Learning to predict events of rain attenuation without appealing to complex mathematical models. To be specific, we implement a Long–short term memory architecture that is a Deep Learning algorithm based on an artificial recurrent neural network. Furthermore, supervised learning is the learning task for our algorithms. For this purpose, rain attenuation time-series feed the Long–short term memory network at the input to train it. However, the lack of a rainfall database hinders the development of a reliable prediction method. Therefore, we generate a synthetic rain attenuation database by using the recommendations of the International Telecommunication Union. Each model is trained and validated by computational experiments, employing statistical metrics to find the most accurate and reliable models. Thus, the accuracy metric compares the outcomes of the proposal with other related methods and models. As a result, our best model reaches an accuracy of 91.88% versus 87.99% from the external best model, demonstrating superiority over other models/methods. On average, our proposal accuracy reaches a value of 88.08%. Finally, we find out that this proposal can contribute efficiently to improving the performance of satellite system networks by re-routing data traffic or increasing link availabilities, taking advantage of the prediction of rain attenuation events. [less ▲]

Detailed reference viewed: 51 (8 UL)
Full Text
Peer Reviewed
See detailProp of ribbon hypergraphs and strongly homotopy involutive Lie bialgebras
Merkulov, Sergei UL

in International Mathematics Research Notices (2022), rnac023

For any integer d we introduce a prop RHrad of d-oriented ribbon hypergraphs (in which "edges" can connect more than two vertices) and prove that there exists a canonical morphism Holieb⋄d⟶RHrad from the ... [more ▼]

For any integer d we introduce a prop RHrad of d-oriented ribbon hypergraphs (in which "edges" can connect more than two vertices) and prove that there exists a canonical morphism Holieb⋄d⟶RHrad from the minimal resolution Holieb⋄d of the (degree shifted) prop of involutive Lie bialgebras into the prop of ribbon hypergraphs which is non-trivial on each generator of Holieb⋄d. As an application we show that for any graded vector space W equipped with a family of cyclically (skew)symmetric higher products the associated vector space of cyclic words in elements of W has a combinatorial Holieb⋄d-structure. As an illustration we construct for each natural number N≥1 an explicit combinatorial strongly homotopy involutive Lie bialgebra structure on the vector space of cyclic words in N graded letters which extends the well-known Schedler's necklace Lie bialgebra structure from the formality theory of the Goldman-Turaev Lie bialgebra in genus zero. [less ▲]

Detailed reference viewed: 136 (1 UL)
Full Text
Peer Reviewed
See detailLarge degrees in scale-free inhomogeneous random graphs
Bhattacharjee, Chinmoy UL; Schulte, Matthias

in Annals of Applied Probability (2022), 32(1), 696-720

We consider a class of scale-free inhomogeneous random graphs, which includes some long-range percolation models. We study the maximum degree in such graphs in a growing observation window and show that ... [more ▼]

We consider a class of scale-free inhomogeneous random graphs, which includes some long-range percolation models. We study the maximum degree in such graphs in a growing observation window and show that its limiting distribution is Frechet. We achieve this by proving convergence of the underlying point process of the degrees to a certain Poisson process. Estimating the index of the power-law tail for the typical degree distribution is an important question in statistics. We prove consistency of the Hill estimator for the inverse of the tail exponent of the typical degree distribution. [less ▲]

Detailed reference viewed: 60 (3 UL)
Full Text
Peer Reviewed
See detailThe ecology of the unseen
Wilmes, Paul UL

in Archives des Sciences Naturelles, Physiques et Mathématiques (2022), XLVIII

On the global scale, humankind is having a profound impact on the ecology of assemblages of organisms which we can see with the naked eye. At the same time, we are also starting to learn about the impact ... [more ▼]

On the global scale, humankind is having a profound impact on the ecology of assemblages of organisms which we can see with the naked eye. At the same time, we are also starting to learn about the impact of our collective, modern lifestyles on the ecology of the unseen, for example the microbes in our gut which are being affected by the overuse of antibiotics and unhealthy diets. However, we do not fully understand which functions the microorganisms fulfill as our knowledge so far is rather limited. In our own research, we see for example that 50-90 % of the molecules produced by microbes are completely unknown to Science but likely play important roles in key physiological processes. This means that we as humans are presently affecting key microbial processes in our bodies without fully understanding the possible repercussions. In addition, many of these molecules likely have bioactive properties and, thereby, represent an untapped resource for the development of new drugs. Therefore, it is important that we start charting out this great molecular expanse to ensure its stewardship for generations to come. [less ▲]

Detailed reference viewed: 58 (4 UL)
Full Text
Peer Reviewed
See detailDer Staat als Träger der Stadtentwicklung. Urbanisierung des Plateau Kirchberg, Luxemburg
Hesse, Markus UL

in RaumPlanung (2022), 216(2-2022), 40-45

Der Beitrag untersucht die Governance-Strukturen des Europa- und Bankenviertels Kirchberg in Luxemburg-Stadt, Musterfall einer Bürostadt der Nachkriegszeit. Dieses Gebiet wird primär durch den Staat als ... [more ▼]

Der Beitrag untersucht die Governance-Strukturen des Europa- und Bankenviertels Kirchberg in Luxemburg-Stadt, Musterfall einer Bürostadt der Nachkriegszeit. Dieses Gebiet wird primär durch den Staat als Träger verantwortet. Es ist indes mit ähnlichen Problemen konfrontiert wie private Großprojekte der Stadtplanung, vor allem mit Blick auf institutionelle Strukturen und Pfadabhängigkeit der Entwicklung. [less ▲]

Detailed reference viewed: 48 (2 UL)
Full Text
Peer Reviewed
See detailTHS-GWNN: a deep learning framework for temporal network link prediction
Mo, Xian; Pang, Jun UL; Liu, Zhiming

in Frontiers of Computer Science (2022), 16(2), 162304

Detailed reference viewed: 124 (2 UL)
Full Text
Peer Reviewed
See detailFunctional Convergence of U-processes with Size-Dependent Kernels
Döbler, Christian UL; Kasprzak, Mikolaj UL; Peccati, Giovanni UL

in Annals of Applied Probability (2022), 32(1), 551-601

Detailed reference viewed: 76 (9 UL)
Full Text
Peer Reviewed
See detailQuantizations of Lie bialgebras, duality involution and oriented graph complexes
Merkoulov (merkulov), Serguei UL; Zivkovic, Marko UL

in Letters in Mathematical Physics (2022), DOI 10.1007(s11005-022-01505-6),

We prove that the action of the Grothendieck-Teichmüller group on the genus completed properad of (homotopy) Lie bialgebras commutes with the reversing directions involution of the latter. We also prove ... [more ▼]

We prove that the action of the Grothendieck-Teichmüller group on the genus completed properad of (homotopy) Lie bialgebras commutes with the reversing directions involution of the latter. We also prove that every universal quantization of Lie bialgebras is homotopy equivalent to the one which commutes with the duality involution exchanging Lie bracket and Lie cobracket. The proofs are based on a new result in the theory of oriented graph complexes (which can be of independent interest) saying that the involution on an oriented graph complex that changes all directions on edges induces the identity map on its cohomology. [less ▲]

Detailed reference viewed: 62 (0 UL)
Full Text
Peer Reviewed
See detailThe regional occupational structure in interwar England and Wales
Calabrese, Matteo UL

in Historical Methods (2022)

A lack of regional data on the occupational structure in England and Wales during the interwar years has so far prevented extensive study of this time period. In the current paper, we fill this gap by ... [more ▼]

A lack of regional data on the occupational structure in England and Wales during the interwar years has so far prevented extensive study of this time period. In the current paper, we fill this gap by reconstructing the occupational structure at the district level, based on a recently-digitized register for 1939 and by linking this dataset with the population censuses of 1911 and 1921. The resulting data reveals significant regional differences in the expansion of the tertiary sector, and the relative decline of agricultural and industrial activities. For industry, we find an increase in the level of geographical concentration during 1911–1921, to decline by 1939. The primary sector followed a similar pattern, whereas activities in the tertiary sector became less concentrated. [less ▲]

Detailed reference viewed: 74 (15 UL)
Full Text
Peer Reviewed
See detailBlockchain as a driving force for federalism: A theory of cross-organizational task-technology fit
Roth, Tamara UL; Stohr, Alexander; Amend, Julia et al

in International Journal of Information Management (2022)

Detailed reference viewed: 60 (2 UL)
Full Text
Peer Reviewed
See detailCharacterizing the theory of energy transition in Luxembourg— Part three— In the residential sector
Arababadi, Ali; Leyer, Stephan UL; Hansen, Joachim UL et al

in Energy Science and Engineering (2022)

Increasing consciousness to address future concerns is a challenging subject, noticed considerably by policymakers and investors. Investigation of energy use in residential buildings in terms of quantity ... [more ▼]

Increasing consciousness to address future concerns is a challenging subject, noticed considerably by policymakers and investors. Investigation of energy use in residential buildings in terms of quantity and sources of energy was the main focus of this study. Indeed, the paper was aimed to study the role of contextual factors on two points: the energy demand and the spreading of renewable technologies in the residential sector. It was theory- driven research to highlight some future concerns. The first theory was to reveal how the growth of single- family houses versus multi- family houses could affect the growth of energy consumption and the application of renewable technologies. The second theory was built to highlight that spreading energy measures to increase efficiency or introducing a new energy carrier should be embedded in the context of new construction activities or in a template of renovation projects. The third theory was to emphasize the priority of thinking about managing the changes in residential buildings because of the lasting impact of the decision about the type of building. Finally, the purpose of the ongoing transition was argued to highlight that the growth of renewable technologies has not been necessarily aligned with getting away from fossil fuels. [less ▲]

Detailed reference viewed: 34 (1 UL)
Full Text
See detailTowards hypothesis-driven, personalized microbiome screening
Sedrani, Catherine Marie UL; Wilmes, Paul UL

in Cell Reports Methods (2022), 2(1),

Detailed reference viewed: 86 (11 UL)
Full Text
Peer Reviewed
See detailA dynamic “predict, then optimize” preventive maintenance approach using operational intervention data
van Staden, Heletje E.; Deprez, Laurens UL; Boute, Robert

in European Journal of Operational Research (2022)

We investigate whether historical machine failures and maintenance records may be used to derive future machine failure estimates and, in turn, prescribe advancements of scheduled preventive maintenance ... [more ▼]

We investigate whether historical machine failures and maintenance records may be used to derive future machine failure estimates and, in turn, prescribe advancements of scheduled preventive maintenance interventions. We model the problem using a sequential predict, then optimize approach. In our prescriptive optimization model, we use a finite horizon Markov decision process with a variable order Markov chain, in which the chain length varies depending on the time since the last preventive maintenance action was performed. The model therefore captures the dependency of a machine’s failures on both recent failures as well as preventive maintenance actions, via our prediction model. We validate our model using an original equipment manufacturer data set and obtain policies that prescribe when to deviate from the planned periodic maintenance schedule. To improve our predictions for machine failure behavior with limited to no past data, we pool our data set over different machine classes by means of a Poisson generalized linear model. We find that our policies can supplement and improve on those currently applied by 5%, on average. [less ▲]

Detailed reference viewed: 32 (1 UL)
Full Text
Peer Reviewed
See detailDifferential graded Lie groups and their differential graded Lie algebras
Jubin, Benoît; Kotov, Alexei; Poncin, Norbert UL et al

in Transformation Groups (2022), 10.1007/s00031-021-09666-9

Detailed reference viewed: 118 (5 UL)
Full Text
Peer Reviewed
See detailEditorial
Cole, Mark David UL

in UFITA - Archiv für Medienrecht und Medienwissenschaft (2022), 86(2021), 209-211

Detailed reference viewed: 14 (0 UL)
Full Text
Peer Reviewed
See detailQuis custodiet ipsos custodes? Data protection in the judiciary in EU and EEA Member States
Terzidou, Kalliopi UL; Custers, Bart; Louis, Linda et al

in International Data Privacy Law (2022)

Detailed reference viewed: 47 (12 UL)
Full Text
Peer Reviewed
See detailLaser welding of copper to aluminum with spiral trajectory and identification of excessive aluminum melting
Mathivanan, Karthik UL; Plapper, Peter UL; Mathivanan, Karthik UL

in Journal of Laser Applications (2022)

Laser welding of copper and aluminum is challenging due to the formation of complex intermetallic phases. Only a defined amount of Al and Cu can be melted because of the limited solubility of Al–Cu ... [more ▼]

Laser welding of copper and aluminum is challenging due to the formation of complex intermetallic phases. Only a defined amount of Al and Cu can be melted because of the limited solubility of Al–Cu systems. Finding the optimum melting is critical for a strong joint. Optical emission during the welding process contains the metal vapor of Al metal that is being welded. This is a good indicator for monitoring the welding process. This research paper focuses on the optical emission of Al from the bottom sheet during welding of Cu (top) and Al (bottom) in overlapped configuration for a spiral trajectory. The emitted signal in the range of 395 nm (±3 nm) from the bottom sheet of aluminum is used to identify excessive Cu–Al welding. The tensile shear strength, microstructure, and welding signal in the time domain for optimum and excessive weld conditions are investigated. In this study, a technique using a photodiode is shown to identify the excessive melting of Al during the welding process in real time. [less ▲]

Detailed reference viewed: 65 (2 UL)
Full Text
Peer Reviewed
See detailUsing small-angle scattering to guide functional magnetic nanoparticle design
Honecker, Dirk; Bersweiler, Mathias UL; Erokhin, Sergey et al

in Nanoscale Advances (2022), 4

Detailed reference viewed: 41 (3 UL)
Full Text
Peer Reviewed
See detailAssociation of ultra-rare coding variants with genetic generalized epilepsy: A case–control whole exome sequencing study
Koko, Mahmoud; Motelow, Joshua E.; Stanley, Kate E. et al

in Epilepsia (2022)

Abstract Objective We aimed to identify genes associated with genetic generalized epilepsy (GGE) by combining large cohorts enriched with individuals with a positive family history. Secondarily, we set ... [more ▼]

Abstract Objective We aimed to identify genes associated with genetic generalized epilepsy (GGE) by combining large cohorts enriched with individuals with a positive family history. Secondarily, we set out to compare the association of genes independently with familial and sporadic GGE. Methods We performed a case–control whole exome sequencing study in unrelated individuals of European descent diagnosed with GGE (previously recruited and sequenced through multiple international collaborations) and ancestry-matched controls. The association of ultra-rare variants (URVs; in 18 834 protein-coding genes) with epilepsy was examined in 1928 individuals with GGE (vs. 8578 controls), then separately in 945 individuals with familial GGE (vs. 8626 controls), and finally in 1005 individuals with sporadic GGE (vs. 8621 controls). We additionally examined the association of URVs with familial and sporadic GGE in two gene sets important for inhibitory signaling (19 genes encoding γ-aminobutyric acid type A [GABAA] receptors, 113 genes representing the GABAergic pathway). Results GABRG2 was associated with GGE (p = 1.8 × 10−5), approaching study-wide significance in familial GGE (p = 3.0 × 10−6), whereas no gene approached a significant association with sporadic GGE. Deleterious URVs in the most intolerant subgenic regions in genes encoding GABAA receptors were associated with familial GGE (odds ratio [OR] = 3.9, 95 confidence interval [CI] = 1.9–7.8, false discovery rate [FDR]-adjusted p = .0024), whereas their association with sporadic GGE had marginally lower odds (OR = 3.1, 95 CI = 1.3–6.7, FDR-adjusted p = .022). URVs in GABAergic pathway genes were associated with familial GGE (OR = 1.8, 95 CI = 1.3–2.5, FDR-adjusted p = .0024) but not with sporadic GGE (OR = 1.3, 95 CI = .9–1.9, FDR-adjusted p = .19). Significance URVs in GABRG2 are likely an important risk factor for familial GGE. The association of gene sets of GABAergic signaling with familial GGE is more prominent than with sporadic GGE. [less ▲]

Detailed reference viewed: 34 (0 UL)
Full Text
Peer Reviewed
See detailSpecial Issue on New Paradigms of Software Production and Deployment
Capozucca, Alfredo UL; Bruel, Jean-Michel; Mazzara, Manuel et al

in SN Computer Science (2022), 3(132),

Ediorial of the Special Issue on “New paradigms of software production and deployment”.

Detailed reference viewed: 53 (5 UL)
Full Text
Peer Reviewed
See detailFocal adhesion kinase plays a dual role in TRAIL resistance and metastatic outgrowth of malignant melanoma
Del Mistro, Greta; Riemann, Shamala; Schindler, Sebastian et al

in Cell Death and Disease (2022)

Despite remarkable advances in therapeutic interventions, malignant melanoma (MM) remains a life-threating disease. Following high initial response rates to targeted kinase-inhibition metastases quickly ... [more ▼]

Despite remarkable advances in therapeutic interventions, malignant melanoma (MM) remains a life-threating disease. Following high initial response rates to targeted kinase-inhibition metastases quickly acquire resistance and present with enhanced tumor progression and invasion, demanding alternative treatment options. We show 2nd generation hexameric TRAIL-receptor-agonist IZI1551 (IZI) to effectively induce apoptosis in MM cells irrespective of the intrinsic BRAF/NRAS mutation status. Conditioning to the EC50 dose of IZI converted the phenotype of IZI-sensitive parental MM cells into a fast proliferating and invasive, IZI-resistant metastasis. Mechanistically, we identified focal adhesion kinase (FAK) to play a dual role in phenotype-switching. In the cytosol, activated FAK triggers survival pathways in a PI3K- and MAPK-dependent manner. In the nucleus, the FERM domain of FAK prevents activation of wtp53, as being expressed in the majority of MM, and consequently intrinsic apoptosis. Caspase-8-mediated cleavage of FAK as well as FAK knockdown, and pharmacological inhibition, respectively, reverted the metastatic phenotype-switch and restored IZI responsiveness. FAK inhibition also re-sensitized MM cells isolated from patient metastasis that had relapsed from targeted kinase inhibition to cell death, irrespective of the intrinsic BRAF/NRAS mutation status. Hence, FAK-inhibition alone or in combination with 2nd generation TRAIL-receptor agonists may be recommended for treatment of initially resistant and relapsed MM, respectively. [less ▲]

Detailed reference viewed: 62 (4 UL)
Full Text
Peer Reviewed
See detailIntersectional Inequalities in Science
Kozlowski, Diego UL; Larivière, Vincent; Sugimoto, Cassidy R. et al

in Proceedings of the National Academy of Sciences of the United States of America (2022), 119(2), 2113067119

The US scientific workforce is primarily composed of White men. Studies have demonstrated the systemic barriers preventing women and other minoritized populations from gaining entry to science; few ... [more ▼]

The US scientific workforce is primarily composed of White men. Studies have demonstrated the systemic barriers preventing women and other minoritized populations from gaining entry to science; few, however, have taken an intersectional perspective and examined the consequences of these inequalities on scientific knowledge. We provide a large-scale bibliometric analysis of the relationship between intersectional identities, topics, and scientific impact. We find homophily between identities and topic, suggesting a relationship between diversity in the scientific workforce and expansion of the knowledge base. However, topic selection comes at a cost to minoritized individuals for whom we observe both between- and within-topic citation disadvantages. To enhance the robustness of science, research organizations should provide adequate resources to historically underfunded research areas while simultaneously providing access for minoritized individuals into high-prestige networks and topics. [less ▲]

Detailed reference viewed: 52 (3 UL)
Full Text
Peer Reviewed
See detailDairy Intake and Parkinson's Disease: A Mendelian Randomization Study
Domenighetti, Cloé; Sugier, Pierre-Emmanuel; Ashok Kumar Sreelatha, Ashwin et al

in Movement Disorders (2022)

Abstract Background Previous prospective studies highlighted dairy intake as a risk factor for Parkinson's disease (PD), particularly in men. It is unclear whether this association is causal or explained ... [more ▼]

Abstract Background Previous prospective studies highlighted dairy intake as a risk factor for Parkinson's disease (PD), particularly in men. It is unclear whether this association is causal or explained by reverse causation or confounding. Objective The aim is to examine the association between genetically predicted dairy intake and PD using two-sample Mendelian randomization (MR). Methods We genotyped a well-established instrumental variable for dairy intake located in the lactase gene (rs4988235) within the Courage-PD consortium (23 studies; 9823 patients and 8376 controls of European ancestry). Results Based on a dominant model, there was an association between genetic predisposition toward higher dairy intake and PD (odds ratio [OR] per one serving per day = 1.70, 95 confidence interval = 1.12–2.60, P = 0.013) that was restricted to men (OR = 2.50 [1.37–4.56], P = 0.003; P-difference with women = 0.029). Conclusions Using MR, our findings provide further support for a causal relationship between dairy intake and higher PD risk, not biased by confounding or reverse causation. Further studies are needed to elucidate the underlying mechanisms. © 2022 International Parkinson and Movement Disorder Society [less ▲]

Detailed reference viewed: 62 (4 UL)
Full Text
Peer Reviewed
See detailBlockchain matters – lex cryptographia and the displacement of legal symbolics and imaginaries
Becker, Katrin UL

in Law and Critique (2022)

This article focusses on the social and legal implications that blockchain technology brings about, not only due to its ideological framework, but also, and especially, due to the concept of law it ... [more ▼]

This article focusses on the social and legal implications that blockchain technology brings about, not only due to its ideological framework, but also, and especially, due to the concept of law it inaugurates. Thus, this article claims, that, by interlocking technological and legal structures, blockchain technology initiates a profound displacement of legal symbolics and imaginaries. It shows how blockchain law, by emancipating itself from three essential dimensions of law—language, territory, and the body—implies a profound disruption of how we perceive law and its legitimacy. Starting with an overview of the technological details of blockchain, the paper then addresses its ideological context and traces the underlying ideas, values and functions and their relation with—and impact on—the general perception of law and legal issues. By critically assessing the claim that blockchain will liberate the subject from any heteronymic constraints, this paper analyses to what extent this technology has social and legal implications that reach far beyond its virtual, purely blockchain-related scope of applications—and why this technology should matter to us all. [less ▲]

Detailed reference viewed: 97 (5 UL)
Full Text
Peer Reviewed
See detailCalibration of the Latest Generation Superconducting Gravimeter iGrav-043 Using the Observatory Superconducting Gravimeter OSG-CT040 and the Comparisons of Their Characteristics at the Walferdange Underground Laboratory for Geodynamics, Luxembourg
Elsaka, Basem; Francis, Olivier UL; Kusche, Jürgen

in Pure and Applied Geophysics (2022)

In December 2019, the latest generation transportable superconducting gravimeter (SG) iGrav-043 purchased by the University of Bonn was installed in the Walferdange Underground Laboratory for Geodynamics ... [more ▼]

In December 2019, the latest generation transportable superconducting gravimeter (SG) iGrav-043 purchased by the University of Bonn was installed in the Walferdange Underground Laboratory for Geodynamics (WULG) in the Grand Duchy of Luxembourg. In this paper, we estimate the calibration factor of the iGrav-043, which is essential for long-term gravity monitoring. We used simultaneously collected gravity data from the un-calibrated iGrav-043 and the calibrated Observatory superconducting gravimeter OSG-CT040 that operates continuously at WULG since 2002. The tidal analysis provides a simple way to transfer the calibration factor of one SG to the other. We then assess and compare tidal analyses, instrumental drifts and high frequency noises. After 20 years of continuous operation, the instrumental drift of the OSG-CT040 is almost zero. From 533 days of joint operation, we found that the instrumental drift of iGrav-043 exhibits a composite behavior: just after the setup and for two months a fast exponential decrease of 171 nm s−2, then a linear with a rate of 66 nm s−2 ± 10 nm s−2 per year. We suggest that a period of 3 months is sufficient for calibrating the iGrav. Accidental electrical power cuts triggered slight differences in the reaction and recovery of the OSG-CT040 and iGrav-043. However, it has been found that the long-term linear behavior of the drift was not affected. [less ▲]

Detailed reference viewed: 31 (1 UL)
Full Text
Peer Reviewed
See detailWhen less is more: Investigating factors influencing the distraction effect of virtual reality from pain
Barcatta, Katharina; Holl, Elisabeth UL; Battistutta, Layla UL et al

in Frontiers in Pain Research (2022), 2

Detailed reference viewed: 33 (3 UL)
Full Text
Peer Reviewed
See detailInterpolating Nonadiabatic Molecular Dynamics Hamiltonian with Artificial Neural Networks
Bipeng Wang; Weibin Chu; Tkatchenko, Alexandre UL et al

in Journal of Physical Chemistry Letters (2022)

Detailed reference viewed: 117 (2 UL)
Full Text
Peer Reviewed
See detailMAGNETOHYDRODYNAMIC ENHANCED ENTRY SYSTEM FOR SPACE TRANSPORTATION (MEESST) AS A KEY BUILDING BLOCK FOR LOW-COST INTERPLANETARY MISSIONS
La Rosa Betancourt, Manuel; Collier-Wright, Marcus; Boegel, Elias et al

in Journal of the British Interplanetary Society (2022), 74(12), 448-453

Aside from the launch environment, atmospheric re-entry imposes one of the most demanding environments which a spacecraft can experience. The combination of high spacecraft velocity and the presence of ... [more ▼]

Aside from the launch environment, atmospheric re-entry imposes one of the most demanding environments which a spacecraft can experience. The combination of high spacecraft velocity and the presence of atmospheric particles leads to partially ionised gas forming around the vehicle, which significantly inhibits radio communications, and leads to the generation of high thermal loads on the spacecraft surface. Currently, the latter is solved using expensive, heavy, and often expendable thermal protection systems (TPS). The use of electromagnetic fields to exploit Magnetohydrodynamic (MHD) principles has long been considered as an attractive solution for this problem. By displacing the ionised gas away from the spacecraft, the thermal loads can be reduced, while also opening a magnetic window for radio waves, mitigating the blackout phenomenon. The application of this concept has to date not been possible due to the large magnetic fields required, which would necessitate the use of exceptionally massive and power-hungry copper coils. High Temperature Superconductors (HTS) have now reached industrial maturity. HTS coils can now offer the necessary low weight and compactness required for space applications. The MEESST consortium the has been awarded a grant from the EU Horizon 2020 programme for the development and demonstration of a novel HTS-based re-entry system based with its foundation on MHD principles. The project will first harmonize existing numerical codes, and then design, manufacture, and test a HTS magnet. The study shows that the use of MEESST technology can have a positive impact on the cost-effectiveness and available payload of interplanetary missions. [less ▲]

Detailed reference viewed: 103 (15 UL)
Full Text
Peer Reviewed
See detailMännerbund, Staatsschiff, Multitude. U-Boote und Raumfahrzeuge als politische Körper
Gradinari, Irina; Pause, Johannes UL

in COLLATERAL: Online Journal for Cross-Cultural Close Reading (2022), 32

Detailed reference viewed: 31 (3 UL)
Full Text
Peer Reviewed
See detailNeed for Cognition and its relation to academic achievement in different learning environments
Colling, Joanne UL; Wollschläger, Rachel UL; Keller, Ulrich UL et al

in Learning and Individual Differences (2022), 93

The present study investigates how Need for Cognition (NFC), an individual's tendency to engage in and enjoy thinking, relates to academic achievement in 9th grade students (N = 3.355) attending different ... [more ▼]

The present study investigates how Need for Cognition (NFC), an individual's tendency to engage in and enjoy thinking, relates to academic achievement in 9th grade students (N = 3.355) attending different school tracks to understand whether school track moderates this relation when controlling for student background variables. Using structural regression analyses, our findings revealed small and significant positive relations between NFC and academic achievement in German, French and Math. Relations were strongest in the highest and weakest in the lowest track. No significant track difference between the highest and the intermediary track could be identified; significant differences of small effect size between the intermediary and the lowest track were found in favor of the intermediary track in the relation between NFC and academic achievement in German and Math. These findings underpin the importance of NFC in academic settings, while highlighting that the relation between NFC and achievement varies with the characteristics of different learning environments. [less ▲]

Detailed reference viewed: 48 (5 UL)
Full Text
Peer Reviewed
See detailLeveraging stretching directions for stationkeeping in Earth-Moon halo orbits
Muralidharan, Vivek UL; Howell, Kathleen C.

in Advances in Space Research (2022), 69(1), 620-646

Near Rectilinear Halo Orbits (NRHOs) are stable or nearly stable orbits that are defined as part of the L1 and L2 halo orbit families in the circular restricted three-body problem. Within the Earth-Moon ... [more ▼]

Near Rectilinear Halo Orbits (NRHOs) are stable or nearly stable orbits that are defined as part of the L1 and L2 halo orbit families in the circular restricted three-body problem. Within the Earth-Moon regime, the L1 and L2 NRHOs are proposed as long horizon trajectories for cislunar exploration missions, including NASA’s upcoming Gateway mission. The spacecraft, however, incurs continuous deviations due to unmodeled forces and orbit determination errors in this dynamically sensitive region. The current investigation focuses on an impulsive stationkeeping technique to maintain the spacecraft near a virtual reference orbit despite these uncertainties. The flow dynamics in the region are utilized to identify appropriate maneuver and target locations. The investigation reflects the impact of various factors on maneuver cost and efficacy. For orbits where position and velocity states are particularly sensitive to epoch time, an additional feedback control strategy is applied for phasing constraints. [less ▲]

Detailed reference viewed: 46 (3 UL)
Full Text
Peer Reviewed
See detailFrom hybrid polariton to dipolariton using non-Hermitian Hamiltonians to handle particle lifetimes
Chenu, Aurélia UL; Shiau, Shiue-Yuan; Chien, Ching-Hang et al

in Physical Review. B, Condensed Matter (2022)

We consider photons strongly coupled to the excitonic excitations of a coupled quantum well, in the presence of an electric field. We show how, under a field increase, the hybrid polariton made of a ... [more ▼]

We consider photons strongly coupled to the excitonic excitations of a coupled quantum well, in the presence of an electric field. We show how, under a field increase, the hybrid polariton made of a photon coupled to hybrid carriers lying in the two wells transforms into a dipolariton made of a photon coupled to direct and indirect excitons. We also show how the cavity photon lifetime and the coherence time of the carrier wave vectors that we analytically handle through non-hermitian Hamiltonians affect these polaritonic states. While the hybrid polaritons display a spectral singularity where the eigenvalues coalesce, known as an exceptional point, that depends on detuning and lifetimes, we find that the three dipolaritonic states display an anticrossing without exceptional point due to the interaction between photons, direct, and indirect excitons. [less ▲]

Detailed reference viewed: 35 (3 UL)